Slctional grain pan for threshing machines



March 14, 1950 D. COCKRELL SECTIONAL GRAIN PAN FOR THRESHING MACHINES 2Sheets-Sheet 1 Filed NOV. 5, 1947 INVENTOR. flerzrzzs (56/??(9/4 ATTD RNEYE March 14, 1950 D. COCKRELL 2,500,803

SECTIONALIGRAIN PAN FOR THRESHING MAYCHINES Filed Nov. 5, 11947 2Sheets-Sheet 2 I7 N i '(b m;

, Mm I 3. v I DEW l\ m w W? Q $8 fig a; .IINVENTOR.

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'ATTDRN EYS Patented Mar. 14, 1950 PATENT OFFICE PANTOR THRESHING'MAGHINES lienni's'dimkrell, Durham, ApplibafiumNiwemhnn 5, 19147,SerialfNo. 78451 55;

(Cl. 13 OT -2%).

My present invention relates to the.- general-Z class, of; threshingimplements. including, grain separators, straw carriers, and. shaking,tables or oscillatingfand, reciprocating rai'n-pans,v andmorespecifically to; an improved adjustable grain-- pan; support orattachment for mounting; the graim-pan within the, separator housing; ofan: automotive combine a mobile thresher',. ora trac tor -towed.tlrresher.

The. primary obiect or. the, invention is the. pro vision of supportingmechanism for a hinged os*-- eillating, grain p'an by means. of whiclirthe suspended' or floating pan may oscillateorreciiurocater smoothlywithout excessive shocks orvi-- b'rations: of the operatingparts, toinsure a more efiicil'e'nt' performance; of the functions of the shakertable or grain-pan;

The attachment of my invention includes a minimum number of partsth'at'maybe manu facture'd with facility at low cost of production, andthe parts may be assembled with conven i'ence: for installation withvarious well known types" of threshing machines Without-- material:alterationof" the machines; toenhance their pro.- fi'ciency.

The invention consists in certain novel combii nations and arrangementsof" parts? for mounting; the suspended gra-in pa n within the separatorhousing as willherei'nafterbediascrihedand'l morer particularly set'forth in the appended claims;

In the accompanying drawings I have illustrat'ed onecompleteexample ofan installation of a physical embodiment of my invention in which theparts' are combined and arranged in accord with=one1mode I-havevdevisedcior the practical application of the principles of inverttion.

It will be understood thatchanges? and alter.- ations are contemplatedand: may be made. in, these exemplifying drawings and mechanicalstructure within the scope. or; my claims; with.- outi-depanting fromthe principles' of theyinvenr Figure 1 is an exterior side elevationof'a portion of a thresher or combine showing the sepa rator housing,and equipped with the adjustable supports of my invention for theinterior grainpan; and

Figure 2 is a vertical longitudinal sectional view of the structure inFig. 1 equipped with the mechanism of my invention.

Figure 3 is a transverse vertical sectional View at line 3-3 of Fig. 1,with parts omitted to more clearly show the application of the mechanismof my invention.

Figure 4 is an enlarged detailiview ii'r SiiiBZ-GIE vation at thehinged-joint (tithe-sectional: grainpan.

Figure-5'is v a detail viewinelevatiorr ofonerofi the two complementarysupports fori the grains pan.

Figure 6 is a: detailed vertical, sectional" view of" the support;

Figure?- shows onex ofthe: hinge belts"; or: pins of the-grain andFigures 8; and 9? are; respectively a face: view:- and edge; view' of?one: ofi'thet r einiiorcing: 01'. wear plates which. protect the sides:of: the; ma:- chine on which my inventiom is; installed: dntingr themovement of the: hingebolts; causedhby the? oscillatiorrandireciprocation 0T3 the gnainepanl,

In order: that the: genera-ll. arrangement ands. utilityof: parts may:readily be-understood; Lhave shown: inf. the-: assembly views, so. much:oil: the: grain separating-portion of; the housing; on a, thresherwhichrisygenerally designated by the nefe erencez numeral I: as; isnecessary for an; apprer- (nation of; the. merits of my invention;Thisspor tionof; the-.- thresher includes the conventionat separatorhousi-ng'in whichthe sectionalonhinged; grains-pan or shaker. table. is.mounted; and the sectionsare: designated; as 2, and 2A respectivelyrThe.,-'sectiont2 is the rear; section, and the sections 2A iszthe frontsection; The. hinged grain-pan issuspended; at its/ ends, as usual on.pivoted, hangers; 3? and 4, and-the pan isnoscillat'ed and ire;-ciprocated in a horizontal planeto. separate. material thatis fed.theretohfromthe rotary cyvli'n der 5-, andpassing through theooncavelfilis deposited. on: the oscillating pan...

The. air. blast caused. by the. usual rotaryfan I. passing thmugh.;.thepassage18 of'the fan. housing; separates thechafi'fromc the. grain asit:fiiiesiove'r the chafi'er f0". The grai'n-pansectionl pruvided. with,the charter fingers 9, overlying the charter; I 0: and sieve? Ll;locatedibeneath. theiachafr ten [0.

In Fig; I, the rotary operating'parts" suclr as the cylinder 5 and fan 1areactuated from" a-belt drive f2, and" thegrain-riansectionsfi and areoscillated by power transmitted from a chain drive I3 in connection witha pitman mechanism I4, pitman l5, and the pivoted rocker arm 16pivotally connected to the grain-pan section 2, as shown in Figure 2.

In carrying out my invention, the hinged and pivotally suspendedoscillating and reciprocating grain-pan sections 2 and 2A are, inaddition to the hangers 3 and 4, provided with a supporting mount at theaxially alined hinge joints, and a pair of these mounts is provided, oneat each exterior side of the housing I. Inasmuch as the two mounts aresimilar in construction and operation, a detailed description of onewill sufiice for both mounts.

The hinge joints, between the two sections 2 and 2A of the grain-panusually include a horizontally disposed truss head rivet. My inventioncontemplates the removal of this conventional rivet, and replacing itwith a hardened steel bolt I1 that passes through the section 2A of thegrain-pan and is supported in the apertured ear or hinge plate I9 boltedat l8 on the hinged end of the section 2.

This outwardly extending bolt is received in a cylindrical bearingbushing 20 that passes pivot pins for connecting the inner ends of thethrough an arcuate slot in the side wall of the housing I, and the wallof the slot is reinforced by means of a hardened metal reinforcing orwear plate 2! having an arcuate slot 22, and bolted on the housing. 1

The reinforcing or wear plate 2i prevents the movement of the bolt andits bushing from wearing the slot in the housing as the floating grainpan is oscillated and reciprocated with flexing movements of the hingejoint, and the grain-pan is supported to insure smooth operation and toabsorb shocks and strains of the Vibrating parts.

At its outer end, the bushing is provided with an integral depending arm23 that is threaded at its lower end into a boss 24 having acomplementary threaded socket 33 in which the arm is adjustablyconnected, and the vboss is integral with a bearing bushing 25. Whenproperly adjusted, the arm is locked in adjusted position by means of apair of lock nuts 26 and 21 threaded on the arm and against the upperend of the boss 24.

The arm 23 rocks with the complementary movements of the grain-pan, andfor this purpose the bushing is journalled upon a supporting bolt or pin28 that is passed through a bearing hole in a base plate 29 that isbolted at 30 on the exterior face of the housing; lock nuts 3| and 32being empolyed on the pivot bolt for retaining the arm assembly inoperative position.

It has been found by operators of the particular type of machine onwhich my invention is installed that the conventional rivet causes wearat the hinged joint of the grain-pan sections. This wear results invibration and slap of the section, which causes serious trouble anddamage to the grain-pan section.

The installation of my invention prevents wear of the grain-pansections, as it'supports these sections at the hinged joint during theoscillation and reciprocation of the sections. The grainpan sectionsfloat smoothly on the hanger, and the hanger is adjustable to compensatefor any wear that may occur.

It is believed that from the foregoing description, the manner ofmounting and the construc- Having thus fully described my invention,what sections and projecting through the slots, a pair of upstandingsupporting arms pivotally mounted at their lower ends on the exterior ofthe housing, a pair of bushings rigid with the upper ends of the armsand enclosing the pins, means for re taining the bushings on the pins,and means for longitudinally adjusting the arms in relation to the pivotpins.

2. In a thresher including a separator housing having slots in the sidewalls and slotted wear plates fixed about the slots, the combinationwith two op osed pair of pivotal y depending hangers mounted on theexterior of the housing, a sectional grain pan, the sections of saidgrain pan being pivotally connected to the hangers at their outer endsand extending inwardly of the hangers and terminating intermediatethereof, pivot pins for pivotally connecting the inner ends of thesections of said grain pan to each other, and said pivot pins projectingthrough said slots, a pair of t upstanding ad ustable supporting armspivotally mounted at their lower ends on the exterior of the housing, apair of bushings rigid with the upper ends of the arms and enclosing thepins, means for retaining the bushings on the pins and means forretaining the arms in various adjustable positions. v

3. In a threshing machine, a separator housing. a grain pan within thehousing having front and rear sections, hangers pivoted at their upperends to the housing and at their lower ends to the remote ends of thepan sections, pivot pins connecting the adjacent ends of the pansections, supporting arms pivoted at their lower ends to the housing andat their upper ends to the pivot pins and means for longitudinallyreciprocating the pan.

DENNIS COCKRELL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 774,125 Winder Nov. 1, 19041,333,278 Pekrul Mar. 9, 1920 1,708,286 Turner Apr. 9, 1929 1,905,393Green Apr. 25, 1933

